AN INTERESTING EGG PROBLEM 173 



during which it would be necessary to make the crank of 

 the machine continually turn in order to move the earth 

 only one inch. We have omitted the fraction of a cen- 

 tury as being of little consequence in a calculation of this 

 kind. The machine is also supposed to be constantly in 

 action, but if it should be worked only eight hours each 

 day, the time required would be three times as long. 



So that while it is true that Archimedes could move the 

 world, the space through which he could have moved it, 

 during his whole life, from infancy to old age, is so small 

 that even if multiplied two hundred million times it could 

 not be measured by even the most delicate of our modern 

 measuring instruments. 



AN INTERESTING EGG PROBLEM 



PARTY of young people going on an excursion 

 proposed to take with them some cold, hard- 

 boiled eggs for lunch. Just as they were about 

 to set out, an addition was made to their number 

 and more eggs were needed. A young boy was sent to 

 the cellar to bring some, which he did, but unfortunately 

 he carelessly placed the raw eggs amongst the boiled ones, 

 and as they were all cold and about the same temperature 

 an interesting problem arose: How could they distinguish 

 and separate them? 



One of the party solved the puzzle very easily and 

 quickly. He placed one of the eggs on a table and taking it 

 between his thumb and fingers he tried to twirl it as one 

 would twirl a teetotum. It would not spin and v * pro- 

 nounced it raw. Taking another and treating it in the same 



